Water-heater.



No. 851,183. PATENTBD APR. 23,1907. T. A. SHOEMAKER.

WATER HEATER, APLIUTION FILED NOV.19, 1908.

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PATENTED APR'. Z3. 1907.

T. A. SHOBMAKBR.

WATER HEATER. APPLIOATION FILED N0v.19,v19o6.

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UNITED sTATEs THOMAS A. SHOEMAKER,

OF DANVILLE, ILLINOIS.

WATER-HEATER.

Specification of Letters Patent.

leatented April 23, 1907.

Application led November 19, l1906. Serial No. 344,048.

ing at Danville, in the county of Vermilion.

and State of Illinois, have invented new and useful Improvements inWater-Heaters, of which the following is a specification.

This invention is a water-heater for hot? water heating-systems, and hasfor its object to provide a heater embodying simplicity of constructionso that it can be cheaply installed and readily kept in good order.

A further object is to provide a novel arrangement of water tubes andbaffle-plates whereby the products of combustion are utilized to theirfullest extent, and all heat extracted before their escape from theheater.

A further object is to provide a heater which can also be used as asteam generator.

In the accom anying drawings, Figure 1 is an elevation of the invention.Fig. 2 is a central vertical section. Fig. 3 is a horizontal section onthe line 2-2 of Fig. 1.

Referring specifically to the drawings, 5 denotes a cylindrical shellwhich forms the casing of the heater. At the top and bottom. of theshell are drums which are connected by a series of tubes 6 arranged in acircle. In larger sized heaters two or more rows of tubes will be used.The drums are formed by the top and bottom tube-sheets 7 and 8,respectively, into which the tubes are rolled7 and casings 9 havingflanges 10 which are bolted as at 1 1 to the tube-sheets. Thetube-sheets extend beyond the shell 5, and on the outside thereof theyare connected by rods 12 which also extend through the flanges 10. Theends of the rodsr are threaded to receive nuts 13 so that `thetube-sheets can be tightly drawn against the shell. In the casing 9 ofthe top drum in line with the tubes are plugs 14. 1 The top drum alsohas a central o ening 15 from which a magazine 16 exten s into theheater. The bottom drum has an open'- ing 17 below which is a grate 18supported on lugs 19 extending from the casing 9.

A suitable shaker-bar 2O is provided which is mounted in the base 21 ofthe heater. The base is a hollow casing which forms the ash pit of theheater.

A door 22 to the ash pit is provided.

The doorway of the fire-door 23 is waterliacketed, and the jacket isconnected to the top and bottom drums by short tubes. Fuel is fed intothe heater through the fire-door, but when a long iire is desired themagazine 16 will be lled.

On top of the tube-sheet 8 behind the tubes is an annular gas burner 25to permit the use of gaseous fuel. Between the burner and the shell 5 isa shield 26 to prevent ashes from lodging behind the burner.

At 27 is indicated a cylinder which is bolted to the tube-sheet 7 andextends around the magazine 16 to within a short distance from its lowerend. The tubes 6 extend between the shell 5 and the cylinder 27. Betweenthe shell and the tubes are downwardly inclined baflle-plates 2S whichare bolted to the shell and extend entirely around the same, the lowerends of the plates being in contact with the tubes. Similar baffleplates29 also extend from` the cylinder 27 the lower ends of said plates alsoextending in.

contact with the tubes. The plates 28 and 29 are staggered so that the,products of combustion take a zigzag course around the tubes asindicated by arrows in Fig. 2. By this arrangement the water is rapidlyheated and a saving of fuel is also had as all the heat is taken fromthe products of combustion before they pass out of the heater. Thebaffleplates are lined on their under sides with asbestos as indicatedat 30, and by inclining them as shown soot, etc., is prevented fromlodging thereon.

The water inlets are indicated 'at 31, the outlets at 32, and the smokeflue at 33. At the top of the cylinder 27 is-an` opening controlled by adamper 34 for establishing a direct draft which. may be desirable whenstarting the fire.

The heater is covered on the outside with asbestos as indicated at 35over `which is placed a jacket 36 of sheet iron which may haveornamental bands 37.

I claim:-

1. In a heater, the combination of a casing, top and bottom drums, amagazine extending through the top drum into the casing, a cylinderdepending from the top drum and surrounding the magazine, and tubesextending between the casing and the cylinder, and connecting the topand bottom drums.

2. In a heater, the combination of a casing, top and bottom drums, acylinder depending from the top drum, tubes connecting IOO platesextending from the cylinder and the casing to the tubes.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

. THOMAS A. SIIOEMAKER.

Witnesses:

ELMER R. JOY, A. MGLENNAN.

